About Knot

Knot’s mission is to empower consumers and businesses alike with connected merchant and banking experiences. Knot is like “Plaid for merchant connectivity.” We are building the platform connecting merchants to the many applications that consumers and businesses interact with everyday. Our flagship CardSwitcher product allows consumers to instantly update & manage their cards on file with online merchant accounts (e.g. Netflix or PayPal). Newer products like TransactionLink support the retrieval of item-level transaction data, while Shopping enables native purchasing and checkout capabilities for any app. We are building many new products on top of our novel merchant connectivity platform and we hope you choose to come build them with us!

Founded in 2021, Knot was founded by two brothers and Thiel Fellows - Rory and Kieran O’Reilly - and today powers connected online payment experiences for hundreds of thousands of consumers. Companies like American Express, PayPal, OnePay, Current, BILT, Step, and more choose to embed Knot’s SDK in their apps to power best-in-class experiences for their customers.

Knot is proudly backed by a select group of investors, including Nava Ventures, 8VC, American Express, Plaid, and co-founders & CEOs of prominent companies like Twitter, Warby Parker, Allbirds, Casper, Intercom, Deel, Italic, DraftKings, and many more.

Working at Knot

We’re a world-class team hailing from all over the globe with the vast majority of the company in engineering roles. We are looking to further solidify our presence in NYC to be at the heart of the financial services ecosystem.

Our team is relentlessly focused on building for our customers and every member of the financial services ecosystem. We take our work seriously and have fun while doing it. Both are equally important.

What you’ll do

Work with an engineering team to build any number of the following:

Brand new 0 → 1 products that interact with direct merchant integrations (to read/write data) and solve a specific problem for customers (exposed via API and webhooks)

Funnel optimizations for the core CardSwitcher product via UX improvements and deep personalization

AI-native validation and code healing systems for data retrieval, parsing, and storage

1st-of-it's-kind, SKU-level reward offer marketplace for merchants to offer rewards for specific products through the Knot UX and network

New transaction data features for the TransactionLink product on the API (e.g. membership info, fulfillment lifecycle info, product recommendations, etc.)

PLG features to enable customers to explore (through data & visualization) and sign up for Knot’s products without speaking to the team

Developer-experience features to make integrating Knot even easier (e.g. MCP, CLI tool, SDKs, 1-click testing, etc.)

Enterprise features (e.g. direct issuer processor integrations, localization, audit logs, observability, custom billing, etc.)

You will also:

Talk to customers frequently via slack & calls to help them integrate Knot seamlessly and to understand customers’ precise needs & desires to influence your roadmap

Prioritize your relationship with the engineering team, doing whatever it takes to support them in building the right products

Find ways to automate as much mundane work in & outside your team as possible

Set an exceptionally high pace for the team and everyone around you

What you’ll need to get the job done

Experience: 2-8 years of experience working at a startup.

Clued-in on AI: you use multiple AI tools daily to perform your role and play with new tools frequently (e.g. cursor, chatgpt, claude, google AI studio, agent builders, etc.).

Intellectual firepower: you are exceptionally smart and can connect many dots to make high quality decisions.

Resilience under pressure: you don’t panic when things get hard and thrive in a high-stakes environment.

In-the-weeds execution: you live in the details and obsess over edge cases, not just pretty strategy decks. You’re the first to notice when something seems off or smells wrong.